I don't use light in my coop. First year pullets will often lay through their first winter. Mine did last year. This year I'll have 4 pullets to give me eggs when the older girls take some time off to rest. Of course, I'm not in the business of selling eggs so I can afford to get enough eggs for just personal use for a couple months. I just give away the extra eggs I get to family and friends. I figure the girls deserve some time off.